1-22 Getting Started When using the AC adapter, make sure the power source falls within thesystem’s compatible range of 100–240 volts AC. Never use the ACadapter if the voltage falls outside of this range. (Watch for this whentraveling to foreign countries.) Turn computer power off before attaching or removing non-plug andplay devices. Avoid using the computer or AC adapter for extended periods in directsunlight. Do not use the system in humid or dusty environments. Turn the computer power off before cleaning it. Avoid exposing the NEC Versa 4200 or AC adapter to extreme changesin temperature or humidity. If it is unavoidable, allow your NEC Versato adjust to room temperature before using. When cleaning the system, use a soft, clean, dry cloth. Avoid wiping thedisplay surface with abrasive material, including rough fabric. If the AC adapter becomes extremely hot, unplug the adapter and let itcool. Do not direct an IR port towards the LCD panel. Keep the AC adapter away from the IR port.Lithium-Ion BatteryTo prevent accidental battery ignition, rupture, or explosion, adhere to thefollowing. Keep the battery away from heat sources including direct sunlight, openfires, microwave ovens, and high-voltage containers. Temperatures over140°F (60°C) may cause damage. Do not drop or impact the battery. Do not disassemble the battery. Do not solder the battery. Do not puncture the battery.